Which is the element with the highest electronegativity value? (1 point) cesium helium calcium fluorine?

Electronegativity means the ability to attract electrons. Since He is a noble gas, it does not attract any more electrons. Cesium and Calcium are both metals, which lose electrons.
Fluorine is the right answer. It is highly electronegative which is the reason that fluorine is considered the most reactive non-metal.

Cr(oh)3 -> cr(3+) + 3oh-

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